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Mucuna pruriens (Velvet Bean)

Mucuna Pruriens

Research reviewed: 2023-2026

Mucuna Pruriens (Mucuna pruriens (Velvet Bean)) is a dietary supplement with 14 published peer-reviewed studies involving 11 participants, researched for Parkinson's Disease & Motor Function, Male Fertility & Testosterone, Neuroprotection & Adaptogenic and 5 more areas.

14
Studies
11
Participants
1996–2026
Research Span

Evidence at a Glance

Strength is scored by study design, sample size, study type, and outcomes

Overall: Strong Evidence

Parkinson's Disease & Motor Function

Moderate
3 studies 0 of 3 positive 2,092 participants 2 human

Male Fertility & Testosterone

Strong
3 studies 3 of 3 positive 285 participants

Neuroprotection & Adaptogenic

Moderate
3 studies 0 of 3 positive 38 participants 1 human

Weight Management

Moderate
1 study 0 of 1 positive 0 participants

Skin Health

Moderate
1 study 1 of 1 positive 11 participants

Mood & Mental Health

Weak
1 study 0 of 1 positive 0 participants

Cognitive Function

Moderate
1 study 0 of 1 positive 0 participants

Blood Sugar

Moderate
1 study 0 of 1 positive 0 participants

Research Visualised

Visual breakdown of the clinical data.

Study Quality Breakdown

What types of studies were conducted

2/14
Randomised
3/14
Double-Blind
1/14
Placebo-Controlled

Participants Per Study

Larger samples = more reliable results

Study 1 (2004)
8
Study 2 (1996)
60
Study 3 (2025)
2,024
Study 4 (2009)
75
Study 5 (2008)
150
Study 6 (2007)
60
Study 7 (2004)
0
Study 8 (2012)
0

Research Timeline

When the studies were published

1
1996
2
2004
1
2007
1
2008
1
2009
1
2012
1
2016
1
2023
1
2024
3
2025
1
2026

All Studies

Detailed breakdown of each trial. Click to expand.

Parkinson's Disease & Motor Function

1

Compare Mucuna pruriens seed powder with levodopa/carbidopa in Parkinson's disease

2004 8 participants Single-dose crossover 30g mucuna seed powder (~1500mg L-dopa equivalent)
Human Study Double-Blind Positive

Study Type

Double-blind crossover study

Purpose

Compare Mucuna pruriens seed powder with levodopa/carbidopa in Parkinson's disease

Dose

30g mucuna seed powder (~1500mg L-dopa equivalent)

Participants

8 PD patients

Duration

Single-dose crossover

Results

Mucuna preparation led to significantly faster onset of action (34.6 vs 68.5 min; p=0.021) and longer on-time without increased dyskinesia compared with standard L-dopa/carbidopa. Supports natural advantages in long-term PD management.

How They Measured It

UPDRS, plasma L-dopa levels, onset of action, dyskinesia

Read full study
2

Assess Mucuna seed powder as natural L-dopa source in PD patients

1996 60 participants 12 weeks Mucuna equivalent to 200mg levodopa
Human Study Positive

Study Type

Open-label pilot study

Purpose

Assess Mucuna seed powder as natural L-dopa source in PD patients

Dose

Mucuna equivalent to 200mg levodopa

Participants

60 PD patients

Duration

12 weeks

Results

Significant UPDRS improvements; comparable motor benefit to synthetic levodopa with potentially fewer peak-dose dyskinesias due to natural absorption matrix.

How They Measured It

UPDRS motor subscale, plasma levodopa concentrations

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3

Systematically review evidence for Mucuna pruriens in PD treatment

2025 2024 participants Various Various (15-45g seed powder)
Review/Other Mixed

Study Type

Systematic review

Purpose

Systematically review evidence for Mucuna pruriens in PD treatment

Dose

Various (15-45g seed powder)

Participants

Systematic review to 2024

Duration

Various

Results

Evidence supports Mucuna as viable alternative to synthetic levodopa with faster onset. Current clinical evidence is limited and further high-quality RCTs are needed to confirm efficacy and safety.

How They Measured It

UPDRS, H&Y scale, QoL outcomes; ROBINS-I bias assessment

Read full study

Male Fertility & Testosterone

4

Effect of Mucuna seed extract on semen quality and hormones in stressed infertile men

2009 75 participants 3 months 5g seed powder daily
Human Study RCT Double-Blind Placebo Positive

Study Type

Randomised double-blind placebo-controlled

Purpose

Effect of Mucuna seed extract on semen quality and hormones in stressed infertile men

Dose

5g seed powder daily

Participants

75 infertile men with psychological stress

Duration

3 months

Results

Significantly improved sperm count, motility, viability; increased testosterone and LH; reduced FSH and prolactin; reduced psychological stress. Restores semen quality and hormonal balance.

How They Measured It

Semen parameters, testosterone, LH, FSH, prolactin, stress markers

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5

Effect of Mucuna on semen parameters and hormones in normozoospermic and oligozoospermic men

2008 150 participants 3 months 5g seed powder/day
Human Study Positive

Study Type

RCT

Purpose

Effect of Mucuna on semen parameters and hormones in normozoospermic and oligozoospermic men

Dose

5g seed powder/day

Participants

150 men (75 oligozoospermic, 75 normozoospermic)

Duration

3 months

Results

Significant improvements in sperm count, motility, and viability in both groups. Testosterone increased in oligozoospermic men. Potent androgenic and spermatogenic activity.

How They Measured It

WHO semen analysis, serum LH, FSH, testosterone, prolactin

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6

Antioxidant status and semen parameters in infertile men treated with Mucuna

2007 60 participants 3 months 5g seed powder/day
Human Study Positive

Study Type

Observational clinical study

Purpose

Antioxidant status and semen parameters in infertile men treated with Mucuna

Dose

5g seed powder/day

Participants

60 infertile men

Duration

3 months

Results

Significantly reduced ROS and lipid peroxidation in seminal plasma; increased antioxidant enzyme levels. Reduced oxidative stress supports fertility improvement.

How They Measured It

ROS levels, antioxidant enzyme activity, semen analysis

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Neuroprotection & Adaptogenic

7

Neuroprotective effects of Mucuna in MPTP-induced dopaminergic toxicity model

2004 ? participants 4 weeks Mucuna seed extract 200mg/kg
Review/Other Mixed

Study Type

Preclinical mechanistic study

Purpose

Neuroprotective effects of Mucuna in MPTP-induced dopaminergic toxicity model

Dose

Mucuna seed extract 200mg/kg

Participants

Animal study

Duration

4 weeks

Results

Restored dopamine levels and provided neuroprotection beyond levodopa alone, suggesting additional protective compounds in whole seed.

How They Measured It

Dopamine levels, oxidative stress, mitochondrial complex I activity

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8

Review of pharmacological activities of Mucuna pruriens

2012 ? participants Various Various
Review/Other Mixed

Study Type

Review

Purpose

Review of pharmacological activities of Mucuna pruriens

Dose

Various

Participants

Review

Duration

Various

Results

Broad activities: antiparkinson, neuroprotective, antioxidant, antidiabetic, aphrodisiac, adaptogenic. L-dopa content 4-7% in seeds; additional compounds contribute to full pharmacological profile.

How They Measured It

Review of preclinical and clinical literature

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9

GH, cortisol and well-being effects of Mucuna pruriens

2016 38 participants 8 weeks 2.5g seed extract daily
Human Study RCT Double-Blind Mixed

Study Type

Randomised double-blind crossover

Purpose

GH, cortisol and well-being effects of Mucuna pruriens

Dose

2.5g seed extract daily

Participants

38 healthy adults

Duration

8 weeks

Results

Elevated GH levels and reduced cortisol versus placebo. Improvements in subjective stress scores consistent with adaptogenic classification.

How They Measured It

Serum GH, cortisol, testosterone; Perceived Stress Scale

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Weight Management

10

Mucuna pruriens in untreated Parkinson's disease in sub-Saharan Africa: A 12-month, multicenter, randomized, controlled trial.

2026 ? participants 12 months See study
Human Study Mixed

Study Type

RCT

Purpose

Mucuna pruriens in untreated Parkinson's disease in sub-Saharan Africa: A 12-month, multicenter, randomized, controlled trial.

Dose

See study

Participants

Not specified

Duration

12 months

Results

ConclusionsMP could be a cost-effective alternative for PD individuals with limited access to commercial levodopa formulations.

How They Measured It

PubMed PMID: 41269916. J Parkinsons Dis

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Skin Health

11

Comparative efficacy of Mucuna pruriens and conventional levodopa in Parkinson's disease: a randomized controlled trial on pharmacokinetics and clinic

2025 11 participants Not specified See study
Human Study Positive

Study Type

RCT

Purpose

Comparative efficacy of Mucuna pruriens and conventional levodopa in Parkinson's disease: a randomized controlled trial on pharmacokinetics and clinic

Dose

See study

Participants

11 participants

Duration

Not specified

Results

demonstrated significantly higher overall drug exposure, with a geometric mean AUC0-∞ of 12,424.

How They Measured It

PubMed PMID: 40137945. J Neural Transm (Vienna)

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Mood & Mental Health

12

The effect of photobiomodulation on histamine and Mucuna pruriens-induced pruritus, hyperknesis and alloknesis in healthy volunteers: A double-blind,

2024 ? participants Not specified See study
Human Study Mixed

Study Type

RCT

Purpose

The effect of photobiomodulation on histamine and Mucuna pruriens-induced pruritus, hyperknesis and alloknesis in healthy volunteers: A double-blind,

Dose

See study

Participants

Not specified

Duration

Not specified

Results

CONCLUSIONS: LLLT effectively reduced histamine-induced pruritus, alloknesis, and hyperknesis; however, LLLT was ineffective against Mucuna pruriens-induced pruritus.

How They Measured It

PubMed PMID: 39024251. PLoS One

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Cognitive Function

13

Dietary supplementation of low levels of unprocessed Mucuna pruriens utilis seed meal induces mild antinutritional entero-physio-metabolic perturbatio

2023 ? participants 21 days See study
Human Study Mixed

Study Type

RCT

Purpose

Dietary supplementation of low levels of unprocessed Mucuna pruriens utilis seed meal induces mild antinutritional entero-physio-metabolic perturbatio

Dose

See study

Participants

Not specified

Duration

21 days

Results

Results showed that dietary MSM did not affect (P > 0.

How They Measured It

PubMed PMID: 37770670. Trop Anim Health Prod

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Blood Sugar

14

Histological response and blood glucose level in a diabetic animal model after the oral administration of Mucuna pruriens: A systematic review and met

2025 ? participants 4 weeks See study
Human Study Positive

Study Type

Meta-Analysis

Purpose

Histological response and blood glucose level in a diabetic animal model after the oral administration of Mucuna pruriens: A systematic review and met

Dose

See study

Participants

Not specified

Duration

4 weeks

Results

CONCLUSION: MP extract demonstrates significant antidiabetic potential through glycemic regulation and organ tissue restoration.

How They Measured It

PubMed PMID: 40584130. Vet World

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Frequently Asked Questions

Common questions about Mucuna Pruriens research

What does the research say about Mucuna Pruriens?

There are currently 14 peer-reviewed studies on Mucuna Pruriens (Mucuna pruriens (Velvet Bean)), involving 11 total participants. Research covers Parkinson's disease & motor function, Testosterone & male fertility, Mood & dopamine support and 1 more areas. The overall evidence strength is rated as Strong.

How strong is the evidence for Mucuna Pruriens?

The evidence is currently rated as "Strong Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (11 human studies), and reported outcomes.

What health goals has Mucuna Pruriens been studied for?

Mucuna Pruriens has been researched for: Parkinson's disease & motor function, Testosterone & male fertility, Mood & dopamine support, Antioxidant. Each area has its own body of evidence which you can explore in the study breakdowns above.

Are the studies on Mucuna Pruriens based on human trials?

Yes, 11 out of 14 studies are human trials. Human trials carry more weight in our evidence scoring system.